private PNG formatPng(ImageModel imgMd)
{
try {
FIBITMAP dib = FreeImage.Allocate(imgMd.width, imgMd.height, 32, 8, 8, 8);
IntPtr pFibData = FreeImage.GetBits(dib);
Marshal.Copy(imgMd.data, 0, pFibData, imgMd.data.Length);
//FIMEMORY fm = new FIMEMORY();
FIMEMORY fm = FreeImage.OpenMemory(IntPtr.Zero, 0);
FreeImage.SaveToMemory(FREE_IMAGE_FORMAT.FIF_PNG, dib, fm, FREE_IMAGE_SAVE_FLAGS.DEFAULT);
FreeImage.SeekMemory(fm, 0, SeekOrigin.End);
int bufferSize = FreeImage.TellMemory(fm);
//Debug.WriteLine("aaa:" + bufferSize);
FreeImage.SeekMemory(fm, 0, SeekOrigin.Begin);
byte[] buffer = new byte[bufferSize];
FreeImage.ReadMemory(buffer, (uint)bufferSize, (uint)bufferSize, fm);
FreeImage.CloseMemory(fm);
FreeImage.Unload(dib);
//using(FileStream fs = new FileStream("aaa_" + i + ".png", FileMode.OpenOrCreate, FileAccess.Write, FileShare.Write)) {
// fs.Write(buffer, 0, bufferSize);
//}
//using(FileStream fs = new FileStream("aaa.png", FileMode.OpenOrCreate, FileAccess.Write, FileShare.Write)) {
// fs.Write(buffer, 0, bufferSize);
//}
PNG pngFrame = new PNG();
using (MemoryStream ms = new MemoryStream(buffer)) {
pngFrame.Load(ms);
}
return(pngFrame);
} catch (Exception) { }
return(null);
}
public override Photo Decode(string file)
{
byte[] buffer = File.ReadAllBytes(file);
int nBufferLength = buffer.Length;
uint nImageWidth, nImageHeight;
uint nBitsPerPixel;
uint nBitsCount;
//byte[] imageBits;
NativePhoto photo = null;
unsafe
{
fixed(byte *pBuffer = buffer)
{
FIMEMORY fiMemory = FreeImage.OpenMemory((IntPtr)pBuffer, nBufferLength);
FREE_IMAGE_FORMAT fiFormat = FreeImage.GetFileTypeFromMemory(fiMemory, nBufferLength);
FIBITMAP fiBitmap = FreeImage.LoadFromMemory(fiFormat, fiMemory, 0);
FREE_IMAGE_COLOR_TYPE colorType = FreeImage.GetColorType(fiBitmap);
HBitmap hBitmap;
HPalette hPalette = IntPtr.Zero, hOldPalette = IntPtr.Zero;
nImageHeight = FreeImage.GetHeight(fiBitmap);
nImageWidth = FreeImage.GetWidth(fiBitmap);
nBitsPerPixel = FreeImage.GetBPP(fiBitmap);
//if (nBitsPerPixel <= 8)
//{
// RGBQUAD[] rgb = FreeImage.GetPaletteCopy(fiBitmap);
// LOGPALETTE logPalette = new LOGPALETTE();
// logPalette.nPalVersion = 0x300;
// logPalette.nPalEntries = 1 << 8;
// PaletteEntry[] palEntries = new PaletteEntry[logPalette.nPalEntries];
// for (int i = 0; i < logPalette.nPalEntries; i++)
// {
// palEntries[i].Blue = rgb[i].rgbBlue;
// palEntries[i].Green = rgb[i].rgbGreen;
// palEntries[i].Red = rgb[i].rgbRed;
// }
// fixed (PaletteEntry* pPalletteEntries = palEntries)
// {
// logPalette.pPalEntry = (IntPtr)pPalletteEntries;
// hPalette = CreatePalette(&logPalette);
// }
//}
HDC hDC = GetDC(IntPtr.Zero);
Debug.Assert(hDC != IntPtr.Zero);
//if (hPalette != IntPtr.Zero)
//{
// hOldPalette = SelectPalette(hDC, hPalette, false);
// RealizePalette(hDC);
//}
hBitmap = CreateCompatibleBitmap(hDC, (int)nImageWidth, (int)nImageHeight);
// hBitmap = CreateDIBitmap(hDC, FreeImage.FreeImage_GetInfoHeader(fiBitmap), 0x04,
//FreeImage.GetBits(fiBitmap), FreeImage.FreeImage_GetInfo(fiBitmap), ColorUseOptions.DIB_PAL_COLORS);
int nResult = SetDIBits(hDC, hBitmap, 0, nImageHeight, FreeImage.GetBits(fiBitmap),
FreeImage.FreeImage_GetInfo(fiBitmap), ColorUseOptions.DIB_RGB_COLORS);
Debug.Assert(nResult != 0);
if (hOldPalette != IntPtr.Zero)
{
SelectPalette(hDC, hOldPalette, false);
}
int width = (int)(FreeImage.GetWidth(fiBitmap));
int height = (int)(FreeImage.GetHeight(fiBitmap));
photo = new NativePhoto(hBitmap, width, height);
ReleaseDC(IntPtr.Zero, hDC);
//if (hPalette != IntPtr.Zero)
// info.PaletteHandle = hPalette;
FreeImage.Unload(fiBitmap);
FreeImage.CloseMemory(fiMemory);
}
}
return(photo);
}